阅读简答：阅读下面短文，简要回答文后问题。 History is the story of us, human beings. Everyone who has lived and everythin

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• 阅读短文，选词填空。(jobs map look useful took how part)What do you know about a robot? Robots are machines th
• 要把制成的洋葱表皮细胞临时装片进行染色，最准确的方法是[]A．在盖玻片的一侧滴加稀碘液B．直接将碘液滴在洋葱叶表皮上C．在盖玻片的一侧滴加稀碘液，用吸水纸在同一侧吸引D．在-七年级生物
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• 图1、图2是细胞结构模式图，请认真看图并回答：（1）图1是__________细胞模式图；图2是__________细胞模式图。（2）图中[2]、[7]是细胞膜；[6]、[]是细胞质；[8]、[]是细
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